API Reference > imodeljs-common > NativeApp > NativeAppAuthorizationConfiguration > expiryBuffer expiryBuffer Readonly expiryBuffer: undefined | number Time in seconds that's used as a buffer to check the token for validity/expiry. The checks for authorization, and refreshing access tokens all use this buffer - i.e., the token is considered expired if the current time is within the specified time of the actual expiry. note If unspecified this defaults to 10 minutes. Defined in core/common/src/NativeAppProps.ts Line 77 Last Updated: 12 June, 2024